# FMF25FPKR040-LH

**PSA Prosperity Dielectrics** · Current Sense Resistors / Shunt Resistors · 2512

FMF25FPKR040-LH from PSA Prosperity Dielectrics, in a 2512. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PSA Prosperity Dielectrics |
| Package | 2512 |
| Category | Resistors |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance tolerance |  | -1 |  | 1 | % | Tolerance code F = ±1% | 5 |
| Temperature coefficient of resistance | TCR | -70 |  | 70 | ppm/°C | FMF25 2W row, 40 mΩ listed under ±70; test 25 to -55°C and 25 to +155°C, IEC 60115-1 Clause 4.8 | 4 |
| Operating temperature range |  | -55 |  | 170 | °C | Operating temperature range | 4 |
| Insulation resistance |  | 1000 |  |  | MΩ | Between termination and coating; test voltage 100±15 V; IEC 60115-1 Clause 4.6 | 8 |
| Board surface temperature at rated power |  |  |  | 105 | ℃ | When applying rated power; solder pad and trace size >300 mm² | 5 |
| Storage temperature |  | 5 |  | 40 | ℃ | Storage condition | 10 |
| Storage relative humidity |  | 20 |  | 70 | %RH | Storage condition | 10 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper |  | Item Protective Molding Resistive Element Internal Terminal External Terminal Material Resin Alloy Metal Copper Solder | 3 |

## CAD (KiCad official)

- Symbol: `FMF25FPKR040-LH`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `fmf25fpkr040-lh-etched.step` / `fmf25fpkr040-lh-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fmf25fpkr040-lh.step` / `fmf25fpkr040-lh.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [PSA Prosperity Dielectrics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603177175822712832) (10 pp, sha256 `1d15e82c90ee2489`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/fmf25fpkr040-lh-datasheet.pdf)